diff --git a/change_network_gateway.sh b/change_network_gateway.sh
index e587f77..576d318 100755
--- a/change_network_gateway.sh
+++ b/change_network_gateway.sh
@@ -340,6 +340,9 @@ for file in $files ; do
       fi
    fi
 done
+if [[ -f "${base_dir}/${network}/default_isc-dhcp-server.${_network}" ]] ; then
+   cp -a "${base_dir}/${network}/default_isc-dhcp-server.${_network}" "/etc/default/isc-dhcp-server"
+fi
 if $failed ; then
    echo_FAILED
    error $(cat $logfile)
diff --git a/copy_gateway-config.sh b/copy_gateway-config.sh
index 4f79e92..503e36b 100755
--- a/copy_gateway-config.sh
+++ b/copy_gateway-config.sh
@@ -130,6 +130,9 @@ fi
 if [ -f "${filesystem_prefix}/etc/dhcp/hosts.w-lan.conf" ]; then
    cp ${filesystem_prefix}/etc/dhcp/hosts.w-lan.conf ${homedir_user}/${_dir}/hosts.w-lan.conf.${_network}
 fi
+if [ -f "${filesystem_prefix}/etc/default/isc-dhcp-server" ] ; then
+   cp -f "${filesystem_prefix}/etc/default/isc-dhcp-server" ${homedir_user}/${_dir}/default_isc-dhcp-server.${_network}
+fi
 
 # - DSL PPP
 # -
diff --git a/remote-copy_gateway-config.sh b/remote-copy_gateway-config.sh
index 359b08f..5ded203 100755
--- a/remote-copy_gateway-config.sh
+++ b/remote-copy_gateway-config.sh
@@ -128,7 +128,8 @@ files="dhcpd.conf.${_network}
        dhcpd6.conf.${_network}
        isc-dhcp6-server.${_network}
        hosts.lan.conf.${_network}
-       hosts.w-lan.conf.${_network}"
+       hosts.w-lan.conf.${_network}
+       default_isc-dhcp-server.${_network}"
 manage_files "$files"
 
 # - DSL PPP